*Excludes Observations that spanned multiple years

Pre 19709
19700
19710
19720
19730
19741
19751
19761
19771
19781
19790
19800
19811
19820
19830
19840
19851
19860
19870
19880
19890
19900
19910
19921
19930
19940
19950
19961
19971
19981
19990
20001
20011
20020
20030
20040
20050
20061
20073
20082
20094
20107
20111
20121
20133
20140
20150
20161
20171
20182
20190
20200
20214
20225
20231
20247
Total65